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Browsing SOE - Scholarly Publications by Author "Dermatas, Dimitris"

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Browsing SOE - Scholarly Publications by Author "Dermatas, Dimitris"

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  • Assessment of brownmillerite and periclase hydration in chromite ore processing residue at elevated temperature 
    Wazne, Mahmoud; Moon, Deok; Dermatas, Dimitris; Sanchez, Adriana M.; Chrysochoou, Maria; Grubb, Dennis G. (ASCE, 2017-07-26)
    Chromite ore processing residue (COPR) is a solid waste that was generated by the high temperature process of chromium extraction from chromite ore using soda ash and lime. The purpose of this study was to evaluate whether ...
  • Ettringite-Induced Heave in Chromite Ore Processing Residue (COPR) upon Ferrous Sulfate Treatment 
    Dermatas, Dimitris; Chrysochoou, Maria; Moon, Deok Hyun; Grubb, Dennis G.; Wazne, Mahmoud; Christodoulatos, Christos (2016-03-01)
    A pilot-scale treatment study was implemented at a deposition site of chromite ore processing residue (COPR) in New Jersey. Ferrous sulfate heptahydrate (FeSO4·7H2O) was employed to reduce hexavalent chromium in two dosages ...
  • Evaluation of ettringite-related swelling mechanisms for treated chromite ore processing residue 
    Wazne, Mahmoud; Moon, Deok Hyun; Dermatas, Dimitris; Sanchez, Adriana; Hoon Cheong, Kyung; Park, Jeong-Hun (2016-06-10)
    Accelerated one-dimensional unconfined swell tests were conducted for ferrous sulfate chromite ore processing residue (COPR) field-treated samples. The field-treated samples were subjected to wet and dry cycles over 100 ...
  • Investigation of barium treatment of chromite ore processing residue 
    Wazne, Mahmoud; Chrysochoou, Maria; Dermatas, Dimitris; Moon, Doek Hyun; Christodoulatos, Christos; French, Chris; Morris, John; Kaouris, Maria (2017-08-10)
    Barium addition to chromite ore processing residue COPR was investigated in order to address a the pronounced heaving phenomena that are associated with mainly the presence of ettringite and b hexavalent chromium ...
  • Long-term treatment issues with chromite ore processing residue (COPR) 
    Moon, Deok Hyun; Wazne, Mahmoud; Dermatas, Dimitris; Christodoulatos, Christos; Sanchez, Adriana M.; Grubb, Dennis G.; Chrysochoou, Maria; Kim, Min Gyu (2016-03-01)
    A pugmill treatability study was conducted to remediate chromite ore processing residue (COPR) using ferrous sulfate heptahydrate (FeSO4·7H2O) as a reductant. Two different types of COPR, with respect to particle size and ...
  • Remediation of chromite ore processing residue using ferrous sulfate and calcium polysulfide 
    Wazne, Mahmoud; Moon, Deok Hyun; Jagupilla, Santhi Chandra; Christodoulatos, Christos; Dermatas, Dimitris; Chrysochoou, Maria (2016-03-01)
    Batch tests were conducted to assess the potential use of ferrous sulfate and calcium polysulfide for the remediation of chromite ore processing residue (COPR). The remediation process entails addition of ferrous sulfate ...
  • Swelling related to ettringite crystal formation in chromite ore processing residue 
    Moon, Deok Hyun; Dermatas, Dimitris; Wazne, Mahmoud; Sanchez, Adriana M.; Chrysochoou, Maria; Grubb, Dennis G. (2016-03-02)
    Several million tons of Chromite Ore Processing Residue (COPR) were deposited at two sites in New Jersey and Maryland, USA, and over time they exhibited extensive heaving phenomena. Ettringite, a needle-shaped mineral and ...

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